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alexgriva [62]
3 years ago
11

The first shell can hold a maximum of two electrons. How does this explain the valence of hydrogen?

Chemistry
1 answer:
Tatiana [17]3 years ago
8 0
Hydrogen has 1 valence electron because it's in the first family. Since it only has one valence electron it can fit on the first shell
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How many silicon atoms are there in 28.09 g of Si?
irinina [24]

Explanation:

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8 0
2 years ago
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Use one of your experimentally determined values of k, the activation energy you determined, and the Arrhenius equation to calcu
stealth61 [152]

Answer:

Explanation:

Use one of your experimentally determined values of k, the activation energy you determined, and the Arrhenius equation to calculate the value of the rate constant at 25 °C. Alternatively, you can simply extrapolate the straight line plot of ln(k) vs. 1/T in your notebook to 1/298 , read off the value of ln(k), and determine the value of k. Please put your answer in scientific notation. slope=-12070, Ea=100kJ/mol, k= 0.000717(45C), 0.00284(55C), 0.00492(65C), 0.0165(75C), 0.0396(85C)

Explanation;

According to Arrhenius equation:

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Where, k1 = 0.000717, T1 = 45 oC = (45+273) K = 318 K

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i.e. ln(k2/0.000717) = -12070 (1/298 - 1/318)

i.e. ln(k2/0.000717) = -2.54738

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= 0.078286

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6 0
3 years ago
Which of the following changes of state is exothermic <br> evaporation? melting? or freezing?
Dvinal [7]
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</span>
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A. Would be the correct answer :-)
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3 years ago
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V = 6.67 L


Hoped this helped ( I believe it's right, sorry if it's not )
7 0
4 years ago
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